alpha rays การใช้

• Rutherford asked Geiger to investigate just how much matter could scatter alpha rays.
• :: Eyes, mind you, are very vulnerable to alpha rays ( unlike skin ).
• As the two recovered, Stardust had earlier fought Alpha Ray.
• Depleted uranium mainly contains alpha rays, which are far less toxic than the gamma rays produced by atomic bombs.
• You do however have alpha ray emitters-- alpha particles that are released by already unstable nuclei with well-defined half lives.
• Or would the alpha rays be blocked by the glass and the gamma rays would just go through you anyway?
• One type had short penetration ( it was stopped by paper ) and a positive charge, which Rutherford named " alpha rays ."
• In 1921 he received his PhD from the University of Chicago with thesis " Multiple valency in the ionization by alpha rays ".
• He had discovered the existence of alpha rays, beta rays, and gamma rays, and had proved that these were the consequence of the disintegration of atoms.
• :: : : : : Historically, the sequence of discovery is actually cathode rays, followed by x-rays, alpha rays, beta rays, gamma rays, and then cosmic rays.
• Astronomical literature tends to write " gamma-ray " with a hyphen, by analogy to X-rays, rather than in a way analogous to alpha rays and beta rays.
• :Different types of radiation have different ranges . alpha rays are stopped in a very short distance by air . gamma rays OTOH can go much farther.
• Skin is sufficient to stop Alpha radiation, so I would assume that alpha rays were stopped by the watch parts and the radon gas amounts were neglegable.
• A sample of beryllium was bombarded with alpha rays from the decay of radium in a 1932 experiment by James Chadwick that uncovered the existence of the neutron.
• Pilot plant officials said the material from Savannah River is " contact handled transuranic, " or CH-TRU, waste, which emits radioactive alpha rays that are dangerous only if inhaled or ingested.
• The radiation from pitchblende was differentiated into alpha rays ( alpha particles ) and beta rays ( beta particles ) by Ernest Rutherford through simple experimentation in 1899, but these proved to be charged particulate types of radiation.
• And although alpha rays are extremely weak and cannot penetrate human skin or a thin sheet of paper, they can ultimately cause cancer if plutonium particles remain lodged long enough next to living human tissues, most health physicists agree.
• However, in a matter of a month or so, a sample of pure depleted uranium will generate small amounts of thorium-234 and protactinium-234, which emit the more penetrating beta particles at almost the same rate as the uranium emits alpha rays.
• Alpha rays ( alpha particles ) and beta rays ( beta particles ) were differentiated by Ernest Rutherford through simple experimentation in 1899 . Rutherford used a generic pitchblende radioactive source and determined that the rays produced by the source had differing penetrations in materials.
• In 1903, it was Ernest Rutherford who proposed to call Villard's rays " gamma rays " because they were far more penetrating than the alpha rays and beta rays which he himself had already differentiated and named ( in 1899 ) on the basis of their respective penetrating powers.